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Finding the Fourth Proportional to 67,830.60, 101,745.90 and 50,115.90

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Solution

The fourth proportional to 67,830.60, 101,745.90 and 50,115.90 is: 75,173.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,830.60 : 101,745.90 = 50,115.90 : x
  2. Step 2: Convert to fraction form
    67,830.60/101,745.90 = 50,115.90/x
  3. Step 3: Cross multiply
    67,830.60x = 101,745.90 × 50,115.90
  4. Step 4: Simplify right side
    67,830.60x = 5,099,087,349.81
  5. Step 5: Solve for x
    x = 5,099,087,349.81/67,830.60
  6. Step 6: Final answer
    x = 75,173.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.